The anatomy of a clinical information system

Three errors occurred in the reference list of this article by Keith Simpson and Mike Gordon (30 May, pp 1655-8). The references should have read:

14 Campbell JR, Payne TH. A comparison of four schemes for codification of problem lists. Proc Ann Symp Comput Appl Med Care 1994:201-5.

16 Donelson WC. Spatial management of information. Proc ACM “SIGGRAPH ’78” 1978;12(3):203-9.

23 Smith M. Prototypically topical. Br J Health Care Comp Information Manage 1993;10:25-7.